This is a communication error with the BIU (body integrated unit). Need to take to the dealer, possible that the ECU needs to be replaced to fix this issue. It should be covered under the federal emmission wrty.

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Sounds like a short on a abs or emergency brake sensor since that would cause the brake light to be triggered also cause a sudden drop in voltage which would trigger the battery light could also be a bad ground at the battery

The suspension on those is really a brilliant thing, isn't it? Unfortunately, bladders that control the ride height don't last forever and they're pretty expensive to replace. The few that have been in my shop for leaking bladders have been retrofitted with conventional struts all around. Not what you wanted to hear, I'm sure, but it's a LOT more expensive to replace the adjustable suspension, and you can bet that if one of them has ruptured, the others aren't far behind.The only thing that I can think of that might be a good temporary fix (6 months?) is to get a used air adjust strut from a salvage yard. If you can find one. Superupair in Boulder, Colorado usually has the most used Suby parts, and I believe they ship nationally.Good luck!